Please note the 2 inch fore and aft travel in the hitch head necessary to cushion the violent jerking of the RV against the truck on bad roads. The larger sized trucks are a great help in controlling the jerking forces but there is no substitute for cushioning in the hitch. The pickup trucks are terrible in the lurching or jerking motions and greatly benefit from cushioned hitches. Two inches of vertical cushioning protects the RV from the violent road imperfections. Due to the need for carrying the Smart Car or Quad 4 wheeler behind the cab as well as pulling the fifth wheel RV the hitch is mounted near the rear of the truck which also improves the ride in the truck.